Home / 190,285.38-285,454.70-77,981.54

Finding the Fourth Proportional to 190,285.38, 285,454.70 and 77,981.54

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Solution

The fourth proportional to 190,285.38, 285,454.70 and 77,981.54 is: 116,983.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,285.38 : 285,454.70 = 77,981.54 : x
  2. Step 2: Convert to fraction form
    190,285.38/285,454.70 = 77,981.54/x
  3. Step 3: Cross multiply
    190,285.38x = 285,454.70 × 77,981.54
  4. Step 4: Simplify right side
    190,285.38x = 22,260,197,106.24
  5. Step 5: Solve for x
    x = 22,260,197,106.24/190,285.38
  6. Step 6: Final answer
    x = 116,983.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.